mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
synced 2026-02-14 16:39:57 +00:00
49cf6340a4
This commit is based on https://github.com/GoldenCheetah/GoldenCheetah/pull/3956 with the following additions / changes: * Upgraded to the latest version of the multiaxes-branch, thus eliminating crashes of GoldenCheetah on startup * Disabled the emitting of Layout Requests on geometry changes of QwtScaleWidget - without this, CPU utilization was up to 100% on one core * Added the class SplineLookup, reusing small portions of code from Qwt 6.1 * Re-added the splines in WPrime and RideFile (resampling), using the new interface of QwtSpline * Appveyor: qwt in cache-section now depends on qwt/qwtconfig.prin.in for refresh on version change
127 lines
3.3 KiB
C++
127 lines
3.3 KiB
C++
/*****************************************************************************
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* Qwt Examples - Copyright (C) 2002 Uwe Rathmann
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* This file may be used under the terms of the 3-clause BSD License
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*****************************************************************************/
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#include "IncrementalPlot.h"
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#include <QwtPlot>
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#include <QwtPlotCurve>
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#include <QwtSymbol>
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#include <QwtScaleMap>
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#include <QwtPlotDirectPainter>
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#include <QwtPainter>
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namespace
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{
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class CurveData : public QwtArraySeriesData< QPointF >
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{
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public:
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virtual QRectF boundingRect() const QWT_OVERRIDE
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{
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if ( cachedBoundingRect.width() < 0.0 )
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cachedBoundingRect = qwtBoundingRect( *this );
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return cachedBoundingRect;
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}
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inline void append( const QPointF& point )
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{
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m_samples += point;
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}
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void clear()
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{
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m_samples.clear();
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m_samples.squeeze();
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cachedBoundingRect = QRectF( 0.0, 0.0, -1.0, -1.0 );
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}
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};
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}
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IncrementalPlot::IncrementalPlot( QWidget* parent )
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: QwtPlot( parent )
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, m_curve( NULL )
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{
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m_directPainter = new QwtPlotDirectPainter( this );
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if ( QwtPainter::isX11GraphicsSystem() )
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{
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#if QT_VERSION < 0x050000
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canvas()->setAttribute( Qt::WA_PaintOutsidePaintEvent, true );
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#endif
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canvas()->setAttribute( Qt::WA_PaintOnScreen, true );
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}
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m_curve = new QwtPlotCurve( "Test Curve" );
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m_curve->setData( new CurveData() );
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showSymbols( true );
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m_curve->attach( this );
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setAutoReplot( false );
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}
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IncrementalPlot::~IncrementalPlot()
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{
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delete m_curve;
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}
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void IncrementalPlot::appendPoint( const QPointF& point )
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{
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CurveData* curveData = static_cast< CurveData* >( m_curve->data() );
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curveData->append( point );
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const bool doClip = !canvas()->testAttribute( Qt::WA_PaintOnScreen );
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if ( doClip && m_curve->symbol() )
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{
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/*
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Depending on the platform setting a clip might be an important
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performance issue. F.e. for Qt Embedded this reduces the
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part of the backing store that has to be copied out - maybe
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to an unaccelerated frame buffer device.
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*/
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const QwtScaleMap xMap = canvasMap( m_curve->xAxis() );
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const QwtScaleMap yMap = canvasMap( m_curve->yAxis() );
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const QSize symbolSize = m_curve->symbol()->size();
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QRect r( 0, 0, symbolSize.width() + 2, symbolSize.height() + 2 );
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const QPointF center = QwtScaleMap::transform( xMap, yMap, point );
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r.moveCenter( center.toPoint() );
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m_directPainter->setClipRegion( r );
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}
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m_directPainter->drawSeries( m_curve,
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curveData->size() - 1, curveData->size() - 1 );
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}
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void IncrementalPlot::clearPoints()
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{
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CurveData* curveData = static_cast< CurveData* >( m_curve->data() );
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curveData->clear();
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replot();
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}
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void IncrementalPlot::showSymbols( bool on )
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{
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if ( on )
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{
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m_curve->setStyle( QwtPlotCurve::NoCurve );
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m_curve->setSymbol( new QwtSymbol( QwtSymbol::XCross,
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Qt::NoBrush, QPen( Qt::white ), QSize( 4, 4 ) ) );
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}
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else
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{
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m_curve->setPen( Qt::white );
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m_curve->setStyle( QwtPlotCurve::Dots );
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m_curve->setSymbol( NULL );
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}
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replot();
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}
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#include "moc_IncrementalPlot.cpp"
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